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The Continuing Evolution of the 1911
USPSA Double Stack
STI USPSA close up USPSA Side view

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USPSA Double Stack

Built on the patented modular steel frame with polymer grip, the USPSA Double Stack delivers the traditional features of a 1911 and allows the added benefit of high capacity magazines. The innovative frame design preserves the 17° angle of the grip in relation to the slide, original to the 1911. The essential design element for high capacity, the polymer grip, allows for double stack magazines without over-sizing the circumference of the grip, which remains comparatively the same as the circumference of a 1911.

This pistol couples STI's patented receiver with all the most desirable accessories in a factory firearm. The controls are STI International's stainless steel ambidextrous thumb safeties and knuckle relief high-rise beavertail grip safety. The full length forged stainless steel barstock slide features STI's unique saber tooth rear cocking serrations, custom USPSA engravings, and is Tri-topped to reduce weight and felt recoil. The barrel is a 5.0" fully ramped, fully supported bull barrel. This excellent firearm comes standard with an STI square hammer, Recoil Master, patented STI trigger system, STI S-7 sear, and titanium strut for smooth, reliable function. The USPSA Double Stack has black inlayed engraving on the polished sides of the two toned blued/ stainless steel slide, stainless steel magwell, and an STI adjustable rear sight.

The USPSA Double Stack has a two toned blued/stainless finish and is available in 9x19, .40, and .45 ACP.


Product Details
MSRP $2790.00
Caliber 9mm, .40 S&W, .45ACP
Frame STI Patented Modular Steel with custom serial number series beginning with "USPSA 2000"
Grips Pre-contoured grip to match magwell
Slide 5" Unique Stainless Steel Slide
Slide Features Two toned finish, "Sabertooth" Rear Serrations, Tri-topped,
Custom USPSA engravings
Trigger Trigger Long, curved polymer
Barrel STI fully supported, 5.0" ramped bull barrel
Hammer STI Square
Safeties Stainless STI grip safety, Ambi-sided thumb safeties
Guide Rod STI RecoilMaster
Sights Dawson Fiber Optic Front Sight w/ STI Adjustable Rear
Overall Length 8.5"
Height 5.5"
Weight 38.5 oz.
Finish Finish Blued with two toned blue/ stainless steel slide
Competition Approvals USPSA, IPSC


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